JP5400714B2 - Air / liquid feeding device - Google Patents

Air / liquid feeding device Download PDF

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JP5400714B2
JP5400714B2 JP2010147505A JP2010147505A JP5400714B2 JP 5400714 B2 JP5400714 B2 JP 5400714B2 JP 2010147505 A JP2010147505 A JP 2010147505A JP 2010147505 A JP2010147505 A JP 2010147505A JP 5400714 B2 JP5400714 B2 JP 5400714B2
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pipe
air
feeding device
liquid feeding
fluid
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JP2012010742A5 (en
JP2012010742A (en
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観 内藤
利幸 池田
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Fujifilm Corp
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Fujifilm Corp
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Priority to JP2010147505A priority Critical patent/JP5400714B2/en
Priority to US13/169,809 priority patent/US20110319716A1/en
Priority to EP11171662.7A priority patent/EP2401955B1/en
Priority to EP13169744.3A priority patent/EP2633801B1/en
Priority to CN201110178727.5A priority patent/CN102309308B/en
Priority to CN201611106749.XA priority patent/CN106913307B/en
Publication of JP2012010742A publication Critical patent/JP2012010742A/en
Publication of JP2012010742A5 publication Critical patent/JP2012010742A5/ja
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Publication of JP5400714B2 publication Critical patent/JP5400714B2/en
Priority to US14/838,173 priority patent/US20150359421A1/en
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本発明は送気送液装置に係り、特に内視鏡の観察窓等の洗浄に用いる空気（気体）の流路である送気管、及び洗浄液の流路である送液管の構造に関する。   The present invention relates to an air / liquid feeding device, and more particularly to an air feeding pipe that is a flow path of air (gas) used for cleaning an observation window of an endoscope and a structure of a liquid feeding pipe that is a flow path of a cleaning liquid.

医療用等として用いられる内視鏡は、体内に挿入される挿入部の先端に照明窓及び観察窓が設けられ、照明窓から照射される照明光のもとで観察窓を介して体内の観察が行われる。しかし、観察窓の表面に体液等の汚損物が付着すると体内の観察視野を制限し、この観察窓を介して得られる観察像の鮮明度が低下する。このために、挿入部を体内に挿入したままで観察窓を清浄化する観察窓洗浄装置が設けられている。この観察窓洗浄装置は、観察窓に向けて洗浄液を噴射して付着物を洗い流し、次いで、加圧された気体を噴射することによって観察窓の表面に付着している液滴を除去するように構成されている。通常、洗浄液は水が用いられ、また加圧された気体としては空気が用いられる。   Endoscopes used for medical purposes are provided with an illumination window and an observation window at the distal end of an insertion portion inserted into the body, and the inside of the body is observed through the observation window under illumination light emitted from the illumination window. Is done. However, if a contaminated material such as a body fluid adheres to the surface of the observation window, the observation field inside the body is limited, and the sharpness of the observation image obtained through the observation window is lowered. For this purpose, an observation window cleaning device is provided that cleans the observation window while the insertion portion is inserted into the body. This observation window cleaning device sprays cleaning liquid toward the observation window to wash away deposits, and then ejects pressurized gas to remove droplets adhering to the surface of the observation window. It is configured. Usually, water is used as the cleaning liquid, and air is used as the pressurized gas.

観察窓洗浄装置の構成例として、観察窓の近傍位置に設けられる噴射ノズルと、該噴射ノズルに洗浄液及びエアを供給するための送気送液装置と、を含む構成が挙げられる。一般に、この送気送液装置は、噴射ノズルに接続される洗浄液管路及びエア管路と、流体供給停止状態、送気状態、及び送液状態の３つの状態を切り換える送気送液バルブと、本体操作部に該洗浄液管路及び該エア管路を介して洗浄液又は加圧エアを噴射ノズルに供給する制御を行うための操作ボタンと、を具備している。かかる構成を有する観察窓洗浄装置は、本体操作部に設けられた操作ボタンを操作者が操作することによって、送気送液バルブの切り換えが実行される。   A configuration example of the observation window cleaning device includes a configuration including an injection nozzle provided in the vicinity of the observation window and an air / liquid supply device for supplying a cleaning liquid and air to the injection nozzle. In general, this air / liquid supply device includes a cleaning liquid line and an air line connected to the injection nozzle, an air / liquid supply valve that switches between three states of a fluid supply stop state, an air supply state, and a liquid supply state. And an operation button for performing control for supplying the cleaning liquid or the pressurized air to the spray nozzle via the cleaning liquid pipe and the air pipe. In the observation window cleaning apparatus having such a configuration, the air supply / liquid supply valve is switched by an operator operating an operation button provided on the main body operation unit.

また、観察窓洗浄装置に適用される送気送液装置として、特許文献１は、直線的に設けられた１本の管路の途中に、Ｌ字状に曲げられた管路が連結された構造を開示している（図６参照）。   Moreover, as an air / liquid feeding device applied to an observation window cleaning device, Patent Literature 1 has a pipe line bent in an L shape connected to a straight line provided in a straight line. The structure is disclosed (see FIG. 6).

特許文献２は、下流側流路取付孔から上流側流路取付孔に向けてテーパ状に拡開された流路合流部を具備する流路合流構造を開示している（図３参照）。   Patent Document 2 discloses a flow path merging structure including a flow path merging portion that is expanded in a tapered shape from the downstream flow path mounting hole toward the upstream flow path mounting hole (see FIG. 3).

特許文献３は、カーブ（屈曲）した形状を有する金属管部と可撓性管部とから成る送気送液管路を開示している（図２参照）。かかる金属管部の一方の端は送気送液口として形成され、送気送液口はタンクと接続されている。   Patent Document 3 discloses an air / liquid supply conduit composed of a curved (bent) metal tube portion and a flexible tube portion (see FIG. 2). One end of the metal pipe portion is formed as an air / liquid supply port, and the air / liquid supply port is connected to a tank.

特許文献４は、送気チューブと送液チューブが送気送液金口を介して送気送液コネクタに接続された構造を開示している（図１、４参照）。   Patent Document 4 discloses a structure in which an air supply tube and a liquid supply tube are connected to an air / liquid supply connector via an air / liquid supply port (see FIGS. 1 and 4).

特許第３６７８６１４号公報Japanese Patent No. 3678614 特開２００７−２３６４２５号公報JP 2007-236425 A 特開２００９−２７９２９９号公報JP 2009-279299 A 特開２００７−１８５３８７号公報JP 2007-185387 A

しかしながら、送気管路及び送液（送水）管路が配設される挿入部（先端部）の内部は、観察窓を介して被観察体を撮像するための撮像ユニットや、該先端部の向きを変えるためにアングルをかける部品等が設けられているために凹凸が存在する。一方、送気管路や送液管路には最適な配置があるにもかかわらず、当該凹凸の存在によって送気管路や送液管路を最適な位置に配置することが困難な場合がある。仮に、先端部の内部の凹凸を避けて送気管及び送液管を最適配置しようとすると、先端部の径方向サイズや長手方向のサイズが大きくなってしまう。   However, the inside of the insertion portion (tip portion) where the air supply conduit and the liquid supply (water supply) conduit are disposed is an imaging unit for imaging the object to be observed through the observation window, and the orientation of the tip portion. Since there are parts and the like that are angled to change the angle, there are irregularities. On the other hand, there are cases where it is difficult to arrange the air supply line or the liquid supply line at an optimal position due to the presence of the unevenness, although the air supply line or the liquid supply line has an optimal arrangement. If it is attempted to optimally arrange the air supply pipe and the liquid supply pipe while avoiding the irregularities inside the tip, the radial size and the longitudinal size of the tip are increased.

本発明はこのような事情に鑑みてなされたもので、送気管路及び送液管路の好ましい配置が実現され、かつ、挿入部（先端部）の大型化が回避される内視鏡の送気送液装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and it is possible to realize a preferable arrangement of the air supply conduit and the liquid supply conduit, and to avoid the increase in the size of the insertion portion (tip portion). It is an object of the present invention to provide an air feeding device.

上記目的を達成するために、本発明に係る送気送液装置は、内視鏡の挿入部の先端部に設けられ、第１の流体を送る第１の流体管と、前記第１の流体管とともに前記内視鏡の挿入部の先端部に設けられ、第２の流体を送る第２の流体管と、前記第１の流体管及び前記第２の流体管と接続される構造を有し、前記第１の流体管及び前記第２の流体管との合流部における中心軸が、前記第１の流体管の中心軸及び前記第２の流体管の中心軸の少なくともいずれか一方とねじれの関係にある合流管と、を備えたことを特徴とする。 In order to achieve the above object, an air / liquid feeding device according to the present invention is provided at a distal end portion of an insertion portion of an endoscope, and a first fluid pipe for sending a first fluid, and the first fluid A second fluid pipe for sending a second fluid, and a structure connected to the first fluid pipe and the second fluid pipe, provided at the distal end of the insertion portion of the endoscope together with the pipe; , the central axis in the combined portion between the first fluid conduit and the second fluid conduit is, at least one and twisting of the central axis of the central shaft and the second fluid conduit of said first fluid pipe And a merging pipe in a relationship.

本発明によれば、合流管の第１の流体管と第２の流体管との合流部において、合流管の中心軸と、第１の流体管の中心軸及び第２の流体管の中心軸の少なくともいずれか一方をねじれの関係とすることで、合流管と接続される第１の流体管及び第２の流体管を周辺の構造に合わせて立体的に配置することができ、第１の流体管及び第２の流体管が配置される部分のスペース効率の向上が見込まれる。   According to the present invention, in the joining portion of the first fluid pipe and the second fluid pipe of the joining pipe, the center axis of the joining pipe, the center axis of the first fluid pipe, and the center axis of the second fluid pipe The first fluid pipe and the second fluid pipe connected to the merging pipe can be three-dimensionally arranged in accordance with the surrounding structure by having at least one of the twisted relations. The space efficiency of the part where the fluid pipe and the second fluid pipe are arranged is expected to be improved.

本発明の第１実施形態に係る内視鏡の全体構成図1 is an overall configuration diagram of an endoscope according to a first embodiment of the present invention. 図１に示す先端面の構成を示す平面図The top view which shows the structure of the front end surface shown in FIG. 図１に示す先端部の立体構造を示す断面図Sectional drawing which shows the three-dimensional structure of the front-end | tip part shown in FIG. 図３に示す合流管の平面図Plan view of the junction pipe shown in FIG. 図４に示すＡ‐Ａ線に沿う断面図Sectional view along the AA line shown in FIG. 図４に示すＢ‐Ｂ線に沿う断面図Sectional view along the BB line shown in FIG. 図４に示すＣ‐Ｃ線に沿う断面図Sectional view along CC line shown in FIG. 図１に示す先端部の概略構造を示す透視斜視図1 is a perspective view schematically showing the structure of the tip shown in FIG. 送気チューブ及び送液チューブに適用されるダブルルーメン構造のチューブの固定方法を説明する図The figure explaining the fixing method of the tube of the double lumen structure applied to an air supply tube and a liquid supply tube 図９に示すダブルルーメン構造のチューブの他の固定方法を説明する図The figure explaining the other fixing method of the tube of the double lumen structure shown in FIG. 図９に示すダブルルーメン構造のチューブの他の固定方法を説明する図The figure explaining the other fixing method of the tube of the double lumen structure shown in FIG. 湾曲部の概略構造を説明する図The figure explaining the schematic structure of a bending part 送気管及び送液管のレイアウトの第１変形例を説明する図The figure explaining the 1st modification of the layout of an air supply pipe and a liquid supply pipe 送気管及び送液管のレイアウトの第２変形例を説明する図The figure explaining the 2nd modification of the layout of an air supply pipe and a liquid supply pipe 送気管及び送液管のレイアウトの第３変形例を説明する図The figure explaining the 3rd modification of the layout of an air supply pipe and a liquid supply pipe 送気管及び送液管のレイアウトの第４変形例を説明する図The figure explaining the 4th modification of the layout of an air supply pipe and a liquid supply pipe 送気管及び送液管のレイアウトの第５変形例を説明する図The figure explaining the 5th modification of the layout of an air supply pipe and a liquid supply pipe 送気管及び送液管のレイアウトの第６変形例を説明する図The figure explaining the 6th modification of the layout of an air supply pipe and a liquid supply pipe 本発明の第２実施形態に係る内視鏡の先端部の立体構造示す断面図（図４に示すＢ‐Ｂ断面図に対応する断面図）Sectional drawing which shows the three-dimensional structure of the front-end | tip part of the endoscope which concerns on 2nd Embodiment of this invention (sectional drawing corresponding to BB sectional drawing shown in FIG. 4) 本発明の第３実施形態に係る内視鏡の先端部の立体構造示す断面図（図４に示すＢ‐Ｂ断面図に対応する断面図）Sectional drawing which shows the three-dimensional structure of the front-end | tip part of the endoscope which concerns on 3rd Embodiment of this invention (sectional drawing corresponding to BB sectional drawing shown in FIG. 4)

以下、添付図面に従って本発明の好ましい実施の形態について詳説する。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

〔第１実施形態〕
（内視鏡の全体構成）
図１は、本発明の実施形態に係る内視鏡の概略構成を示す全体構成図である。同図に示す内視鏡１は、体腔内の被写体像を電子像として取り出す電子内視鏡であり、術者が所要の操作を行うための操作部１０と、体腔内に挿入される挿入部２０と、プロセッサ装置等に接続するための接続部３０と、を含んで構成される。 [First Embodiment]
(Overall configuration of endoscope)
FIG. 1 is an overall configuration diagram showing a schematic configuration of an endoscope according to an embodiment of the present invention. An endoscope 1 shown in FIG. 1 is an electronic endoscope that extracts a subject image in a body cavity as an electronic image, and includes an operation unit 10 for an operator to perform a required operation, and an insertion unit that is inserted into the body cavity. 20 and a connection unit 30 for connecting to a processor device or the like.

操作部１０は、処置具を挿入するための鉗子入口１２と、挿入部２０の先端を上下左右に湾曲操作するためのアングルノブ１４と、挿入部２０の先端に設けられたノズル（図１中不図示、図２に符号５８を付して図示）から水や空気又は炭酸ガス（以下、本明細書中のノズルから噴出させる「気体」は、少なくとも空気及び炭酸ガスのいずれかを含むものとする。）を噴出させて、挿入部２０の先端に設けられた観察窓（図１中不図示、図２に符号５０を付して図示）を洗浄するための送気送液ボタン１６と、挿入部２０の先端に設けられた鉗子出口（図１中不図示、図２に符号５６を付して図示）を介して吸引を行うための吸引ボタン１８と、を具備している。   The operation unit 10 includes a forceps inlet 12 for inserting a treatment instrument, an angle knob 14 for bending the distal end of the insertion unit 20 up and down, left and right, and a nozzle provided at the distal end of the insertion unit 20 (in FIG. 1). Not shown, “58” shown in FIG. 2 is indicated by water, air, or carbon dioxide (hereinafter referred to as “gas” ejected from a nozzle in the present specification) includes at least one of air and carbon dioxide. ) And an air / liquid feeding button 16 for cleaning an observation window (not shown in FIG. 1, not shown in FIG. 2 and indicated by reference numeral 50) provided at the distal end of the insertion portion 20, and the insertion portion And a suction button 18 for performing suction through a forceps outlet (not shown in FIG. 1; shown with reference numeral 56 in FIG. 2) provided at the distal end of 20.

挿入部２０は、所定の直径を有し、断面形状が略円形上の管状に形成され、操作部１０の先端に一体的に連設される。この挿入部２０は、可撓性を有する軟性部２２と、その軟性部２２の先に設けられた湾曲自在な湾曲部２４と、湾曲部２４の先端に設けられた先端部（先端硬質部）２６とで構成される。   The insertion portion 20 has a predetermined diameter, is formed in a tubular shape having a substantially circular cross section, and is integrally connected to the distal end of the operation portion 10. The insertion portion 20 includes a flexible soft portion 22, a bendable bending portion 24 provided at the tip of the soft portion 22, and a tip portion (tip hard portion) provided at the tip of the bending portion 24. 26.

軟性部２２は、可撓管で構成され、操作部１０の先端に一体的に連設される。挿入部２０の大部分は、この軟性部２２で構成される。湾曲部２４は、湾曲自在に構成され、軟性部２２の先端に一体的に連設される。この湾曲部２４は、操作部１０に設けられたアングルノブ１４の操作に連動して上下左右に湾曲する。したがって、この湾曲部２４を所望の方向に湾曲させることにより、先端部２６を体腔内で所望の方向に向けることができる。先端部２６は、金属（たとえば、ステンレス）等の硬質な素材で円柱状に形成され、湾曲部２４の先端に一体的に連設される。   The flexible portion 22 is formed of a flexible tube and is integrally connected to the distal end of the operation unit 10. Most of the insertion portion 20 is composed of the soft portion 22. The bending portion 24 is configured to be bendable and is integrally connected to the tip of the flexible portion 22. The bending portion 24 is bent vertically and horizontally in conjunction with the operation of the angle knob 14 provided in the operation portion 10. Therefore, by curving the bending portion 24 in a desired direction, the distal end portion 26 can be directed in a desired direction within the body cavity. The distal end portion 26 is formed in a cylindrical shape from a hard material such as metal (for example, stainless steel) and is integrally connected to the distal end of the bending portion 24.

接続部３０は、操作部１０に連設されたユニバーサルコード３２と、そのユニバーサルコード３２の先端部に備えられた複数のコネクタとで構成される。このコネクタは、プロセッサ装置３６に接続するためのプロセッサ用コネクタ３４ａと、光源装置３８に接続するための光源用コネクタ３４ｂと、プロセッサ装置３６が内蔵される筐体内に設けられる送気送液装置（不図示）に接続するための送気送液用コネクタ３４ｃが含まれる。   The connection unit 30 includes a universal cord 32 provided continuously with the operation unit 10 and a plurality of connectors provided at the distal end of the universal cord 32. This connector includes a processor connector 34 a for connecting to the processor device 36, a light source connector 34 b for connecting to the light source device 38, and an air / liquid feeding device (inside the housing in which the processor device 36 is built-in). An air / liquid connector 34c for connection to an unillustrated) is included.

（先端部の説明）
図２は、図１に示す先端部２６の先端面２６ａの構造を示す平面図である。同図に示す先端面２６ａは、略円形状の平面形状を有しており、先端面２６ａの外周寄りの位置に配置され、観察対象部位を観察するための観察窓５０と、観察窓５０をはさんだ両側であり、外周寄りの位置に配置され、該観察対象部位に照明光を照射する一対の照明窓５２，５４と、鉗子入口１２（図１参照）から挿入された処置具の出口となる鉗子出口５６と、観察窓５０に対して洗浄液及び空気を吹き付けるためのノズル５８が配置されている。 (Description of the tip)
FIG. 2 is a plan view showing the structure of the distal end surface 26a of the distal end portion 26 shown in FIG. The distal end surface 26a shown in the figure has a substantially circular planar shape, and is arranged at a position near the outer periphery of the distal end surface 26a. A pair of illumination windows 52 and 54 that are disposed on both sides of the sandwich and near the outer periphery and irradiate the observation target site with illumination light, and an exit of the treatment instrument inserted from the forceps inlet 12 (see FIG. 1). A forceps outlet 56 and a nozzle 58 for spraying cleaning liquid and air to the observation window 50 are arranged.

ノズル５８は、観察窓５０に噴出口（図２中不図示、図８に符号５８ａを付して図示）が向くように配置され、ノズル５８に隣接して鉗子出口５６が配置されている。また、先端面２６ａの外周の縁部２６ｂが、所定径でアール面取りされている。   The nozzle 58 is disposed such that a spout (not shown in FIG. 2, and indicated by reference numeral 58 a in FIG. 8) faces the observation window 50, and a forceps outlet 56 is disposed adjacent to the nozzle 58. Further, the outer peripheral edge 26b of the distal end surface 26a is rounded with a predetermined diameter.

図２に示す一対の照明窓５２，５４のそれぞれの奥（内側）には、照明光学系が配置されている。この照明光学系には、図１に示す挿入部２０の内側に配設されたライトガイド（不図示）が接続され、接続部３０の光源用コネクタ３４ｂを光源装置３８に接続すると、その光源装置３８に内蔵された光源ランプ（不図示）に接続される。したがって、光源装置３８の光源ランプを点灯させると、その光源ランプの光がライトガイドによって照明光学系に導光される。そして、この照明光学系に導光された光が、図２に示す照明窓５２，５４を介して観察対象部位に向けて照射される。   An illumination optical system is arranged in the back (inside) of each of the pair of illumination windows 52 and 54 shown in FIG. A light guide (not shown) disposed inside the insertion portion 20 shown in FIG. 1 is connected to the illumination optical system, and when the light source connector 34b of the connection portion 30 is connected to the light source device 38, the light source device. 38 is connected to a light source lamp (not shown) built in 38. Therefore, when the light source lamp of the light source device 38 is turned on, the light from the light source lamp is guided to the illumination optical system by the light guide. Then, the light guided to the illumination optical system is irradiated toward the observation target portion through the illumination windows 52 and 54 shown in FIG.

図２に示す鉗子出口５６は、図１に示す挿入部２０の内側に配設された鉗子チャンネル（不図示）を介して、操作部１０の鉗子入口１２に接続される。鉗子入口１２から挿入された鉗子等の処置具は、図２に示す鉗子出口５６から突出する。   The forceps outlet 56 shown in FIG. 2 is connected to the forceps inlet 12 of the operation unit 10 via a forceps channel (not shown) disposed inside the insertion portion 20 shown in FIG. A treatment tool such as a forceps inserted from the forceps inlet 12 protrudes from the forceps outlet 56 shown in FIG.

ノズル５８は、先端部２６の先端面２６ａから突出して設けられており、観察窓５０に向いた噴出口を備えるとともに、該噴出口の反対側端部は図１に示す挿入部２０の内部に形成される合流管（図２中不図示、図３に符号１１０を付して図示）と接続されている。該合流管は、送気管路（図２中不図示、図３に符号１１２を付して図示）、送液管路（図２中不図示、図３に符号１１４を付して図示）、及び送気チューブ（図２中不図示、図３に符号１１６を付して図示）、送液チューブ（図２中不図示、図３に符号１１８を付して図示）を介して図１に示す接続部３０と連通される。さらに、該送気チューブ及び該送液チューブは、接続部３０の送気送液用コネクタ３４ｃを介して送気送液ユニット４０に接続される。 The nozzle 58 is provided so as to protrude from the distal end surface 26a of the distal end portion 26, and includes a jet port facing the observation window 50, and the opposite end portion of the jet port is located inside the insertion portion 20 shown in FIG. It is connected to a junction pipe to be formed (not shown in FIG. 2; shown with reference numeral 110 in FIG. 3). The merging pipe includes an air supply line (not shown in FIG. 2, indicated by reference numeral 112 in FIG. 3), a liquid supply line (not shown in FIG. 2, indicated by reference numeral 114 in FIG. 3), 1 through an air supply tube (not shown in FIG. 2, indicated by reference numeral 116 in FIG. 3) and a liquid supply tube (not shown in FIG. 2, indicated by reference numeral 118 in FIG. 3). It connects with the connecting part 30 shown. Further, the air supply tube and the liquid supply tube are connected to the air supply / liquid supply unit 40 via the air supply / liquid supply connector 34 c of the connection portion 30.

図１に図示した操作部１０に設けられた送気送液ボタン１６を操作すると、前記した送気チューブ、送液チューブ、送気管路、及び送液管路を介して送気送液ユニット４０から空気又は水（洗浄用流体）が選択的に送出される。そして、この送気送液ユニット４０から送出された空気又は水がノズル５８の噴出口から観察窓５０に向けて噴出される。観察窓５０を洗浄するときは、まず、ノズル５８から水を噴出させ、その後、空気を噴出させる。これにより、まず、水で観察窓５０が洗浄され、その洗浄後に観察窓５０上に残存する水滴を空気で吹き飛ばして除去することができる。 When the air / liquid feeding button 16 provided in the operation unit 10 shown in FIG. 1 is operated, the air / liquid feeding unit 40 is provided via the air feeding tube, the liquid feeding tube, the air feeding pipeline, and the liquid feeding pipeline. Air or water (cleaning fluid) is selectively delivered from the air. Then, air or water delivered from the air / liquid feeding unit 40 is ejected from the ejection port of the nozzle 58 toward the observation window 50. When cleaning the observation window 50, first, water is ejected from the nozzle 58, and then air is ejected. Thereby, first, the observation window 50 is washed with water, and water droplets remaining on the observation window 50 after the washing can be removed by blowing off with air.

（先端部の内部構造の説明）
図３は、先端部２６の内部構造を示す断面図（図２における観察窓５０の中心とノズル５８の中心を結んだ断面線に沿う断面図）である。同図に示すように、観察窓５０はカバーガラス１００と一体に構成されており、カバーガラス１００の内側には、対物レンズ１０２等を含む対物光学系１０３が配置されている。カバーガラス１００は対物光学系１０３の一部を構成するレンズとすることができ、一般に平凹レンズが用いられる。 (Description of the internal structure of the tip)
FIG. 3 is a cross-sectional view (a cross-sectional view taken along a cross-sectional line connecting the center of the observation window 50 and the center of the nozzle 58 in FIG. 2) showing the internal structure of the distal end portion 26. As shown in the figure, the observation window 50 is configured integrally with the cover glass 100, and an objective optical system 103 including an objective lens 102 and the like is disposed inside the cover glass 100. The cover glass 100 can be a lens constituting a part of the objective optical system 103, and generally a plano-concave lens is used.

対物光学系１０３の結像位置には固体撮像素子（ＣＣＤ）１０４が取り付けられており、対物光学系１０３を介して入射した、照明窓５２，５４（図２参照）から観察対象部位に向けて照射された光の反射光は、プリズム１０６により略９０°屈折され、固体撮像素子１０４の受光面に入射し、固体撮像素子１０４は受光面上に観察対象部位の光学像を結像させる。固体撮像素子１０４の受光面上に結像された観察対象部位の光学像は、固体撮像素子１０４によって電気信号に変換され、信号線１０８を介して内視鏡１（図１参照）に接続されたプロセッサ装置３６に出力される。この電気信号はプロセッサ装置３６によりビデオ信号に変換され、内視鏡画像としてモニタ４２に映し出される。   A solid-state imaging device (CCD) 104 is attached to the imaging position of the objective optical system 103, and enters the observation target region from the illumination windows 52 and 54 (see FIG. 2) incident through the objective optical system 103. The reflected light of the irradiated light is refracted by approximately 90 ° by the prism 106 and is incident on the light receiving surface of the solid-state imaging device 104, and the solid-state imaging device 104 forms an optical image of the site to be observed on the light receiving surface. The optical image of the observation target part imaged on the light receiving surface of the solid-state image sensor 104 is converted into an electrical signal by the solid-state image sensor 104 and connected to the endoscope 1 (see FIG. 1) via the signal line 108. To the processor unit 36. This electrical signal is converted into a video signal by the processor device 36 and is displayed on the monitor 42 as an endoscopic image.

また、先端部２６は、対物光学系１０３に含まれる移動レンズ（ズームレンズ）を移動させるためのズーム機構１０７（破線により図示）が設けられており、図１に示した操作部１０に設けられるズームレバーを操作することによって、ズーム調整が可能に構成されている。ズーム機構１０７は、図３における対物光学系１０３の下側（後述する合流管１１０側）に配置される。   Further, the distal end portion 26 is provided with a zoom mechanism 107 (illustrated by a broken line) for moving a moving lens (zoom lens) included in the objective optical system 103, and is provided in the operation unit 10 shown in FIG. The zoom can be adjusted by operating the zoom lever. The zoom mechanism 107 is disposed below the objective optical system 103 in FIG.

一方、対物光学系１０３の配設位置の図３における下側には、ノズル５８（図２参照）の噴出口（図８参照）と連通する合流管１１０が形成されている。合流管１１０は、先端面２６ａに形成された略円形の開口１１０ａから先端部２６の中心軸の方向へ向かう凹部として形成される。なお、図３では図示を省略するが、合流管１１０の開口１１０ａには、後述する送気管路１１２及び送液管路１１４の傾斜に対応した面取り加工（図５，６に符号１１０ｃを付して図示）が施されている。 On the other hand, a merging pipe 110 that communicates with the nozzle (see FIG. 8) of the nozzle 58 (see FIG. 2) is formed below the position where the objective optical system 103 is disposed in FIG. The junction tube 110 is formed as a recess that extends from the substantially circular opening 110a formed in the distal end surface 26a toward the central axis of the distal end portion 26. Although not shown in FIG. 3, the opening 110a of the merging pipe 110 is chamfered corresponding to the inclination of the air supply pipe 112 and the liquid supply pipe 114 (denoted by reference numeral 110c in FIGS. 5 and 6). Are shown).

合流管１１０の操作部側平面（底面）１１０ｂは、破線により図示した送気管路１１２及び送液管路１１４の一方の端部が接続される。送気管路１１２及び送液管路１１４は、合流管１１０と連通するとともに、合流管１１０の操作部側平面１１０ｂから操作部側（奥側）へ延びるように形成されている。   The operation unit side plane (bottom surface) 110b of the merging pipe 110 is connected to one end of the air supply line 112 and the liquid supply line 114 illustrated by broken lines. The air supply line 112 and the liquid supply line 114 are formed so as to communicate with the merging pipe 110 and to extend from the operation part side plane 110b of the merging pipe 110 to the operation part side (back side).

送気管路１１２の他方の端部は、送気パイプ（図３中不図示、図６に符号１２６を付して図示）を介して送気チューブ１１６と接続されるとともに、送液管路１１４の他方の端部は、送液パイプ（図３中不図示、図６に符号１２８を付して図示）を介して送液チューブ１１８に接続される。この送気チューブ１１６及び送液チューブ１１８は、軟性部２２の内部を通って送気送液用コネクタ３４ｃと連通している。 The other end of the air supply line 112 is connected to the air supply tube 116 via an air supply pipe (not shown in FIG. 3, and indicated by reference numeral 126 in FIG. 6), and the liquid supply line 114. the other end of is connected to the liquid feed tube 118 through a liquid feed pipe (in FIG. 3 not shown, shown by reference numeral 128 in FIG. 6). The air supply tube 116 and the liquid supply tube 118 communicate with the air / liquid supply connector 34 c through the inside of the flexible portion 22.

図３に示す送気管路１１２は、合流管１１０の操作部側平面１１０ｂの上下方向（観察窓５０が合流管１１０の真上に位置する状態における上下方向）における略中央位置から斜め上方向へ向かって形成される傾斜部１１２ａと、先端部２６の中心軸の方向と略平行方向に形成される水平部１１２ｂと、を含んでいる。同様に、送液管路１１４は該略中央位置から斜め下方向へ向かって形成される傾斜部１１４ａと、先端部２６の中心軸の方向と略平行方向に形成される水平部１１４ｂと、を含んでいる。   The air supply duct 112 shown in FIG. 3 extends obliquely upward from a substantially central position in the vertical direction (the vertical direction when the observation window 50 is positioned directly above the merge pipe 110) of the operation unit side surface 110b of the merge pipe 110. An inclined portion 112a formed toward the front and a horizontal portion 112b formed in a direction substantially parallel to the direction of the central axis of the tip end portion 26 are included. Similarly, the liquid supply conduit 114 includes an inclined portion 114a formed obliquely downward from the substantially central position, and a horizontal portion 114b formed in a direction substantially parallel to the direction of the central axis of the distal end portion 26. Contains.

なお、図３では、図示の都合上、傾斜部１１２ａ，１１４ａと水平部１１２ｂ，１１４ｂとは同一の直径で図示されているが、図６，７に示すように、水平部１１２ｂ，１１４ｂに接続される送気パイプ１２６及び送液パイプ１２８の直径に対応して、水平部１１２ｂ，１１４ｂの一部又は全部の直径を傾斜部１１２ａ，１１４ａより大きくしてもよい。   In FIG. 3, for the sake of illustration, the inclined portions 112a and 114a and the horizontal portions 112b and 114b are shown with the same diameter, but as shown in FIGS. 6 and 7, they are connected to the horizontal portions 112b and 114b. Corresponding to the diameters of the air supply pipe 126 and the liquid supply pipe 128, the diameters of some or all of the horizontal portions 112b and 114b may be larger than those of the inclined portions 112a and 114a.

（合流管、送気管路、送液管路の構造の説明）
図４は、合流管１１０の操作部側平面１１０ｂを開口１１０ａ側から見た図である。また、図５〜７はそれぞれ、図４中Ａ‐Ａ線、Ｂ−Ｂ線、Ｃ‐Ｃ線に沿う断面図である。なお、同図に示すＡ‐Ａ線とＢ−Ｂ線及びＣ‐Ｃ線とは交差する関係を有し、Ｂ−Ｂ線とＣ‐Ｃ線とは略平行となる関係を有している。 (Explanation of structure of confluence pipe, air supply line, liquid supply line)
FIG. 4 is a view of the operation unit side plane 110b of the junction pipe 110 as viewed from the opening 110a side. 5 to 7 are cross-sectional views taken along lines AA, BB, and CC in FIG. 4, respectively. In addition, the AA line, the BB line, and the CC line shown in the figure have a crossing relationship, and the BB line and the CC line have a substantially parallel relationship. .

図４に示す合流管１１０の真上に観察窓５０（図３参照）が位置する状態において、送気管路１１２の一方の端部となる穴部１１２ｃ及び送液管路１１４の一方の端部となる穴部１１４ｃは左右方向に並ぶよう配置され、送気管路１１２の他方の端部となる穴部１１２ｄ及び送液管路１１４の他方の端部となる穴部１１４ｄは上下方向に並ぶように配置される。すなわち、送気管路１１２は先端部２６の中心軸の方向に対して斜め方向に形成されるとともに、図３における上下方向に対して斜め上方向に形成されている。同様に、送液管路１１４は、送気管路１１２は先端部２６の中心軸の方向に対して斜め方向（送気管路１１２と反対方向）に形成されるとともに、図３における上下方向に対して斜め下方向に形成されている。 Observation window 50 just above the shown to focus the flow tube 110 in FIG. 4 in a state (see FIG. 3) is positioned, feeding one of the hole 112c and the liquid supply conduit 114 which serves as one end of the duct 112 The holes 114c that serve as ends are arranged in the left-right direction, and the holes 112d that serve as the other ends of the air supply conduit 112 and the holes 114d that serve as the other end of the fluid feed conduit 114 are arranged vertically. Arranged side by side. That is, the air supply duct 112 is formed in an oblique direction with respect to the direction of the central axis of the distal end portion 26 and is formed in an obliquely upward direction with respect to the vertical direction in FIG. Similarly, the liquid supply line 114 is formed in an oblique direction (a direction opposite to the air supply line 112) with respect to the direction of the central axis of the distal end portion 26, and the vertical direction in FIG. Are formed obliquely downward.

図５に示す先端部２６のＡ−Ａ断面は、合流管１１０の操作部側平面１１０ｂに形成される送気管路１１２の一方の端部となる穴部１１２ｃ及び送液管路１１４の一方の端部となる穴部１１４ｃが見える面であり、送気管路１１２の一方の端部１１２ｃ側の一部と、送液管路１１４の一方の端部１１４ｃ側の一部が見える面である。図５に示すように、合流管１１０と送気管路１１２との合流部（送気管路１１２の一方の端部１１２ｃ）において、合流管１１０の中心軸１２０の方向と送気管路１１２の中心軸１２２の方向とは、平行ではなくある角度を成しているとともに、合流管１１０と送液管路１１４との合流部（送液管路１１４の一方の端部１１４ｃ）のそれぞれにおいて、合流管１１０の中心軸１２０の方向と送液管路１１４の中心軸１２４の方向とは、平行ではなくある角度を成している。   The AA cross section of the distal end portion 26 shown in FIG. 5 is one of the hole 112c and one of the liquid supply conduits 114 that are one end of the air supply conduit 112 formed in the operation portion side plane 110b of the confluence tube 110. It is a surface where the hole 114c as an end can be seen, and a portion where one end 112c side of the air supply conduit 112 and a portion of one end 114c of the liquid supply conduit 114 can be seen. As shown in FIG. 5, the direction of the central axis 120 of the confluence pipe 110 and the central axis of the air supply duct 112 at the confluence portion (one end 112 c of the air supply duct 112) between the confluence pipe 110 and the air supply duct 112. The direction of 122 is not parallel but forms an angle, and at each of the junctions between the junction pipe 110 and the liquid feed pipe 114 (one end 114c of the liquid feed pipe 114), The direction of the central axis 120 of 110 and the direction of the central axis 124 of the liquid supply conduit 114 are not parallel but form an angle.

また、合流管１１０と送気管路１１２との合流部における送気管路１１２の中心軸１２２の方向と、合流管１１０と送液管路１１４との合流部における送液管路１１４の中心軸１２４の方向とは平行ではない。   In addition, the direction of the central axis 122 of the air supply conduit 112 at the confluence portion of the confluence tube 110 and the air supply conduit 112 and the central axis 124 of the liquid supply conduit 114 at the confluence portion of the confluence tube 110 and the liquid supply conduit 114. It is not parallel to the direction.

図６に示すＢ‐Ｂ断面は、送気管路１１２の傾斜部１１２ａの中心軸が存在する面であり、送気管路１１２の合流管１１０側の端部となる穴部１１２ｃから斜め上方向に向かって形成される送気管路１１２の傾斜部１１２ａが見える面であるとともに、送気管路１１２の水平部１１２ｂが見える面であり、送気管路１１２の全体が見える面である。一方、Ｂ‐Ｂ断面は送液管路１１４が見えない面である。   The BB cross section shown in FIG. 6 is a surface on which the central axis of the inclined portion 112a of the air supply duct 112 is present, and obliquely upward from the hole 112c serving as the end of the air supply duct 112 on the confluence pipe 110 side. This is a surface where the inclined portion 112a of the air supply conduit 112 formed toward the surface can be seen, and the surface where the horizontal portion 112b of the air supply conduit 112 can be seen, and the surface where the entire air supply conduit 112 can be seen. On the other hand, the BB cross section is a surface where the liquid feeding conduit 114 cannot be seen.

図７に示すＣ‐Ｃ断面は、送液管路１１４の傾斜部１１４ａの中心軸が存在する面であり、送液管路１１４の合流管１１０側の端部となる穴部１１４ｃから斜め下方向に向かって形成される送液管路１１４の傾斜部１１４ａが見える面であるとともに、送液管路１１４の水平部１１４ｂが見える面であり、送液管路１１４の全体が見える面である。一方、Ｃ‐Ｃ断面は、送気管路１１２が見えない面である。なお、図４に示すようにＢ‐Ｂ断面とＣ‐Ｃ断面とは平行である。   The CC cross section shown in FIG. 7 is a surface on which the central axis of the inclined portion 114a of the liquid supply conduit 114 is present, and is obliquely downward from the hole portion 114c serving as the end portion of the liquid supply conduit 114 on the confluence tube 110 side. This is a surface where the inclined portion 114a of the liquid supply conduit 114 formed in the direction can be seen, and the surface where the horizontal portion 114b of the liquid supply conduit 114 can be seen, and the surface where the entire liquid supply conduit 114 can be seen. . On the other hand, the CC cross section is a surface where the air supply duct 112 cannot be seen. As shown in FIG. 4, the BB cross section and the CC cross section are parallel.

すなわち、送気管路１１２の傾斜部１１２ａの中心軸と、送液管路１１４の傾斜部１１４ａの中心軸と、は互いに平行ではなく、かつ、異なる平面に存在する位置関係を有しており、送気管路１１２の傾斜部１１２ａ（送気管路１１２の傾斜部１１２ａの中心軸）と送液管路１１４の傾斜部１１４ａ（送液管路１１４の傾斜部１１４ａの中心軸）とは、ねじれの関係（いわゆる立体的に交差する関係）の位置になるように、送気管路１１２の傾斜部１１２ａ及び送液管路１１４の傾斜部１１４ａが形成されている。   That is, the central axis of the inclined portion 112a of the air supply conduit 112 and the central axis of the inclined portion 114a of the liquid supply conduit 114 are not parallel to each other and have a positional relationship existing on different planes. The inclined portion 112a of the air supply conduit 112 (the central axis of the inclined portion 112a of the air supply conduit 112) and the inclined portion 114a of the liquid supply conduit 114 (the central axis of the inclined portion 114a of the liquid supply conduit 114) are twisted. An inclined portion 112a of the air supply conduit 112 and an inclined portion 114a of the liquid supply conduit 114 are formed so as to be in a relationship (so-called three-dimensional crossing relationship) position.

換言すると、合流管１１０と送気管路１１２及び送液管路１１４との合流部（操作部側平面１１０ｂ）において、送気管路１１２の一方の端部である穴部１１２ｃと送液管路１１４の一方の端部である穴部１１４ｃとの並び方向（例えば、図４のＡ‐Ａ線の方向）に対して直交しない斜め方向の断面線（例えば、図４のＢ‐Ｂ線）による断面を取ったときに、送気管路１１２及び送液管路１１４のうち一方の管路は見え、他方の管路は見えないように該一方の管路が加工されるとともに、該斜め方向の断面線と異なる断面線（例えば、図４のＣ‐Ｃ線）による断面を取ったときに、当該他方の管路は見え、当該一方の管路は見えないように該他方の管路が加工されている。 In other words, at the junction (the operation unit side plane 110b) between the junction pipe 110, the air supply pipe 112, and the liquid supply pipe 114, the hole 112c that is one end of the air supply pipe 112 and the liquid supply pipe 114. A cross section taken along an oblique cross-sectional line (for example, the BB line in FIG. 4) that is not orthogonal to the alignment direction (for example, the direction of the AA line in FIG. 4) with the hole 114c that is one end of When one of the air supply pipe 112 and the liquid supply pipe 114 is seen, the one pipe is processed so that the other pipe cannot be seen, and the oblique section is shown. When the cross section taken along a cross-sectional line different from the line (for example, line CC in FIG. 4 ) is taken, the other pipe is processed so that the other pipe is visible and the one pipe is not visible. ing.

かかる送気管路１１２及び送液管路１１４の構造を有する内視鏡の送気送液装置によれば、合流管１１０の操作部側平面１１０ｂにおける送気管路１１２の一方の端部（穴部）１１２ｃと送液管路１１４の一方の端部（穴部）１１４ｃとの並び方向と、送気管路１１２の他方の端部１１２ｄと送液管路１１４の他方の端部（穴部）１１４ｄとの並び方向と、を横並びから縦並び（又は縦並びから横並び）のように回転させることができ、送気管路１１２の他方の端部１１２ｃと接続される送気チューブ１１６、及び送液管路１１４の他方の端部１１４ｄと接続される送液チューブ１１８を自由に配置することができる。 According to the air supply / liquid supply device of the endoscope having the structure of the air supply pipe 112 and the liquid supply pipe 114, one end portion (hole portion) of the air supply pipe 112 on the operation unit side plane 110 b of the merging pipe 110. ) 112c and one end (hole) 114c of the liquid supply conduit 114, and the other end 112d of the air supply conduit 112 and the other end (hole) 114d of the liquid supply conduit 114 , And an air supply tube 116 connected to the other end 112c of the air supply pipe 112, and a liquid supply pipe, which can be rotated from horizontal to vertical (or vertical to horizontal). the liquid supply tube 118 which is connected to the other end portion 114d of the road 114 can be freely arranged.

次に、上述した合流管１１０、及び送気管路１１２、送液管路１１４を含む先端部２６と、送気チューブ１１６、送液チューブ１１８、及びノズル５８と、接合例について説明する。   Next, the joining pipe 110, the air supply pipe 112, the distal end portion 26 including the liquid supply pipe 114, the air supply tube 116, the liquid supply tube 118, the nozzle 58, and a joining example will be described.

図８は、先端部２６の概略構造を示す透視斜視図である。同図に示す先端部２６は、図３に図示した撮像ユニット等の図示が省略されており、主として送気及び送液に関係する部分が図示されている。図８に示すように、ノズル５８は、観察窓５０（図１参照）の直径に対応する長軸方向の径を有するだ円形状の噴出口５８ａと、一方の端に噴出口５８ａが形成される第１通路部５８ｂと、第１通路部５８ｂの他方の端部と連通するとともに、反対側の端部が合流管１１０の操作部側平面１１０ｂに対応する形状を有する第２通路部５８ｃと、を含んで構成されている。第２通路部５８ｃは合流管１１０の内径に対応する外径を有しており、合流管１１０の内部に挿入される。かかる構造を有するノズル５８が合流管１１０の内部に挿入されると、ノズル５８の噴出口５８ａは第１通路部５８ｂ及び第２通路部５８ｃを介して送気管路１１２及び送液管路１１４と連通される。   FIG. 8 is a transparent perspective view showing a schematic structure of the distal end portion 26. In the tip portion 26 shown in the figure, the imaging unit and the like shown in FIG. 3 are omitted, and portions mainly related to air supply and liquid supply are shown. As shown in FIG. 8, the nozzle 58 has an elliptical jet port 58a having a major axis diameter corresponding to the diameter of the observation window 50 (see FIG. 1), and a jet port 58a at one end. A first passage portion 58b that communicates with the other end portion of the first passage portion 58b, and a second passage portion 58c that has a shape corresponding to the operation portion side plane 110b of the merging pipe 110 at the opposite end portion. , Including. The second passage portion 58 c has an outer diameter corresponding to the inner diameter of the merge pipe 110 and is inserted into the merge pipe 110. When the nozzle 58 having such a structure is inserted into the merging pipe 110, the jet outlet 58a of the nozzle 58 is connected to the air supply line 112 and the liquid supply line 114 via the first passage part 58b and the second passage part 58c. Communicated.

合流管１１０は、先端部２６の先端面２６ａ側からの穴あけ加工により形成される。合流管１１０が形成されると、合流管１１０の操作部側平面１１０ｂから斜め方向への穴あけ加工によって送気管路１１２の傾斜部１１２ａ及び送液管路１１４の傾斜部１１４ａが形成される。一方、送気管路１１２の水平部１１２ｂ及び送液管路１１４の水平部１１４ｂは操作部側からの穴あけ加工により形成される。   The merge pipe 110 is formed by drilling from the front end surface 26 a side of the front end portion 26. When the merging pipe 110 is formed, an inclined portion 112a of the air supply pipe line 112 and an inclined part 114a of the liquid supply pipe line 114 are formed by drilling in an oblique direction from the operation unit side plane 110b of the merging pipe 110. On the other hand, the horizontal portion 112b of the air supply conduit 112 and the horizontal portion 114b of the liquid supply conduit 114 are formed by drilling from the operation portion side.

傾斜部１１２ａ，１１４ａを形成する際に、合流管１１０の開口１１０ａに施された面取り加工部１１０ｃの傾斜を利用して、斜め方向に刃を入れることが可能となる。すなわち、該面取り加工部１１０ｃを傾斜部１１２ａ，１１４ａの傾斜に対応する形状とすることで、傾斜部１１２ａ，１１４ａの際に開口１１０ａの縁に刃が当たって所望の角度で穴あけ加工を行うことができない事態を回避し得る。   When the inclined portions 112a and 114a are formed, it is possible to insert the blade in an oblique direction by using the inclination of the chamfered portion 110c applied to the opening 110a of the joining pipe 110. That is, by forming the chamfered portion 110c into a shape corresponding to the inclination of the inclined portions 112a and 114a, the blade hits the edge of the opening 110a at the inclined portions 112a and 114a, and drilling is performed at a desired angle. You can avoid situations where you can't.

送気管路１１２の水平部１１２ｂには送気パイプ１２６が接合され、送気パイプ１２６の送気管路１１２と接続される端の反対側の端は送気チューブ１１６と接合される。同様に、送液管路１１４の水平部１１４ｂには送液パイプ１２８が接合され、送液パイプ１２８の送液管路１１４と接合される端の反対側の端は送液チューブ１１８と接合される。   An air supply pipe 126 is joined to the horizontal portion 112 b of the air supply pipe 112, and an end opposite to the end connected to the air supply pipe 112 of the air supply pipe 126 is joined to the air supply tube 116. Similarly, a liquid feed pipe 128 is joined to the horizontal portion 114b of the liquid feed pipe 114, and an end opposite to the end of the liquid feed pipe 128 joined to the liquid feed pipe 114 is joined to the liquid feed tube 118. The

送気チューブ１１６及び送液チューブ１１８は、２本のチューブが一体に形成されるとともに、当該２本のチューブが内部で区画されるダブルルーメン構造が好適である。例えば、湾曲が大きい軟性部２２の先端側にダブルルーメン構造のチューブを用い、軟性部２２の湾曲方向と該ダブルルーメン構造のチューブが曲がりやすい方向とを対応させるように該ダブルルーメン構造のチューブを配置させるとよい。また、途中から独立したチューブを用いてもよい。   The air supply tube 116 and the liquid supply tube 118 preferably have a double lumen structure in which two tubes are integrally formed and the two tubes are partitioned inside. For example, a tube having a double lumen structure is used on the distal end side of the flexible portion 22 having a large curvature, and the tube having the double lumen structure is made to correspond to the bending direction of the flexible portion 22 and the direction in which the tube having the double lumen structure is easily bent. It is good to arrange. Moreover, you may use the tube independent from the middle.

（送気チューブ及び送液チューブの固定方法の例）
図９〜１１には、送気チューブ１１６及び送液チューブ１１８の固定方法を例示する。図９は、糸状の固定部材１３０を用いて、送気パイプ１２６と送気チューブ１１６及び送液パイプ１２８と送気チューブ１１６との接合部分を糸巻きにより固定する方法を示す。また、図１０（ａ）〜（ｃ）は、ダブルルーメン構造のチューブに対応する中空形状を有する接合部材１３２を用いた固定方法を図示する。さらに、図１１は、送気パイプ１２６と送気チューブ１１６の端部にフランジ１３４を取り付ける固定方法を図示する。なお、図１１に図示したフランジを取り付ける態様は、送気チューブ１１６及び送液チューブ１１８に個別のチューブを用いる場合にも有効である。 (Example of fixing method of air supply tube and liquid supply tube)
9 to 11 illustrate a method for fixing the air supply tube 116 and the liquid supply tube 118. FIG. 9 shows a method of fixing the joining portion of the air supply pipe 126 and the air supply tube 116 and the liquid supply pipe 128 and the air supply tube 116 by using a thread-like fixing member 130 by thread winding. 10A to 10C illustrate a fixing method using a joining member 132 having a hollow shape corresponding to a tube having a double lumen structure. Further, FIG. 11 illustrates a fixing method for attaching the flange 134 to the ends of the air supply pipe 126 and the air supply tube 116. Note that the aspect of attaching the flange shown in FIG. 11 is also effective when individual tubes are used for the air supply tube 116 and the liquid supply tube 118.

（湾曲部の構成例）
図１２（ａ），（ｂ）は、挿入部２０の先端を上下左右に湾曲操作するための湾曲部２４の概略構造を説明図である。図１２（ａ）は、先端部２６と湾曲部２４の接続部分を湾曲部２４から見た平面図であり、図１２（ｂ）はワイヤの固定構造を模式的に図示した説明図である。なお、図１２（ｂ）において、内部に配置される信号線１０８、送気チューブ１１６、送液チューブ１１８等の図示は省略されている。 (Configuration example of bending part)
12A and 12B are explanatory views of a schematic structure of the bending portion 24 for bending the distal end of the insertion portion 20 in the vertical and horizontal directions. 12A is a plan view of a connecting portion between the distal end portion 26 and the bending portion 24 as seen from the bending portion 24, and FIG. 12B is an explanatory view schematically showing a wire fixing structure. In FIG. 12B, illustration of the signal line 108, the air supply tube 116, the liquid supply tube 118, and the like disposed therein is omitted.

図１２（ａ）、（ｂ）に示すように、湾曲部２４の１コマ目は、略Ｕ字形状に曲げられたワイヤ１４２を固定するための４つの固定部１４０ａ〜１４０ｄが設けられている。各固定部１４０ａ〜１４０ｄには、湾曲部２４の内周面の近傍位置を通るワイヤ１４２の先端部がはんだ付け処理やロウ付け処理により固定される。ワイヤ１４２の他方の端部は、湾曲部２４、軟性部２２を通ってアングルノブ１４と接合される（図１参照）。アングルノブ１４を操作部して４本のワイヤ１４２いずれかを引っ張ることで、湾曲部２４を湾曲させることができる。   As shown in FIGS. 12A and 12B, the first frame of the bending portion 24 is provided with four fixing portions 140a to 140d for fixing the wire 142 bent into a substantially U shape. . In each of the fixing portions 140a to 140d, the tip end portion of the wire 142 passing through the position near the inner peripheral surface of the bending portion 24 is fixed by a soldering process or a brazing process. The other end portion of the wire 142 is joined to the angle knob 14 through the bending portion 24 and the flexible portion 22 (see FIG. 1). The bending portion 24 can be bent by operating the angle knob 14 and pulling one of the four wires 142.

図１２（ａ）に示す４つの固定部１４０ａ〜１４０ｄは、湾曲部２４の内周を構成する円周上に９０°間隔で等間隔に設けられると、各固定部１４０ａ〜１４０ｄに接合されるワイヤ１４２を等間隔に配置させることができ、湾曲部２４を湾曲させて先端部２６にアングル操作をかける（先端部２６の向きを変える）操作が各方向についてバランスよく行われる。   The four fixing portions 140a to 140d shown in FIG. 12A are joined to the respective fixing portions 140a to 140d when they are provided at equal intervals of 90 ° on the circumference constituting the inner periphery of the bending portion 24. The wires 142 can be arranged at equal intervals, and an operation of bending the bending portion 24 and applying an angle operation to the distal end portion 26 (changing the direction of the distal end portion 26) is performed in a balanced manner in each direction.

しかし、湾曲部２４においてワイヤ１４２の近く（湾曲部の内周面近傍の位置）に送気チューブ１１６や送液チューブ１１８が配置されると、ワイヤ１４２が引っ張られたときに送気チューブ１１６や送液チューブ１１８を内側に押してしまうので、従来は固定部１４０ａ〜１４０ｄの位置をずらして、送気チューブ１１６や送液チューブ１１８とワイヤ１４２が干渉しないようにワイヤ１４２の位置をずらしていた。かかる構成では、特定の方向へのアングル操作のバランスが悪くなる懸念があった。 However, if the air supply tube 116 or the liquid supply tube 118 is disposed near the wire 142 (position near the inner peripheral surface of the bending portion) in the bending portion 24, the air supply tube 116 or the like when the wire 142 is pulled Since the liquid feeding tube 118 is pushed inward, conventionally, the positions of the fixing portions 140a to 140d are shifted, and the position of the wire 142 is shifted so that the air feeding tube 116 or the liquid feeding tube 118 and the wire 142 do not interfere with each other. . In such a configuration, there is a concern that the balance of the angle operation in a specific direction is deteriorated.

本例に示す合流管１１０及び送気管路１１２、送液管路１１４を適用することで、固定部１４０ａ〜１４０ｄの位置をずらすことなく最適配置したまま、送気管路１１２の他方の端部１１２ｄや送液管路１１４の他方の端部１１４ｄの配置を適宜変更することができるので、送気チューブ１１６及び送液チューブ１１８が最適配置されるとともに、ワイヤ１４２を最適配置することができる。 By applying the confluence pipe 110, the air supply pipe 112, and the liquid supply pipe 114 shown in this example, the other end of the air supply pipe 112 is placed optimally without shifting the positions of the fixing parts 140a to 140d. 112d and the other end 114d of the liquid supply conduit 114 can be appropriately changed, so that the air supply tube 116 and the liquid supply tube 118 are optimally arranged, and the wire 142 can be optimally arranged.

上記の如く構成された内視鏡１に具備される送気送液装置によれば、先端部２６に形成される送気管路１１２及び送液管路１１４をねじれ位置の関係となるように形成することで、先端部２６に内蔵される撮像ユニット等の凹凸を避けつつ、送気チューブ１１６及び送液チューブ１１８の最適配置が実現される。また、湾曲部２４のワイヤ１４２の最適配置との両立も可能である。   According to the air / liquid feeding device provided in the endoscope 1 configured as described above, the air feeding duct 112 and the liquid feeding duct 114 formed at the distal end portion 26 are formed so as to have a twisted position relationship. By doing so, the optimal arrangement of the air supply tube 116 and the liquid supply tube 118 is realized while avoiding unevenness of the imaging unit or the like built in the distal end portion 26. In addition, the optimal arrangement of the wire 142 of the bending portion 24 can be achieved.

内視鏡１の先端部２６における送気チューブ１１６及び送液チューブ１１８の固定位置を最適化することで、湾曲をかけても送気チューブ１１６及び送液チューブ１１８の配列が乱れにくく、送気チューブ１１６及び送液チューブ１１８等の耐久性の向上が見込まれる。   By optimizing the fixing positions of the air supply tube 116 and the liquid supply tube 118 at the distal end portion 26 of the endoscope 1, the arrangement of the air supply tube 116 and the liquid supply tube 118 is not easily disturbed even if it is curved, and the air supply The durability of the tube 116 and the liquid feeding tube 118 is expected to be improved.

（変形例）
次に、図１３〜図１７を用いて、上述した合流管１１０、及び送気管路１１２、送液管路１１４の構造に係る変形例（第１変形例〜第５変形例）について説明する。なお、図１３〜図１７中、先に説明した部分と同一又は類似する部分には同一の符号を付し、その説明は省略する。 (Modification)
Next, modified examples (first modified example to fifth modified example) related to the structure of the merging pipe 110, the air supply pipe line 112, and the liquid supply pipe line 114 will be described with reference to FIGS. In FIGS. 13 to 17, the same or similar parts as those described above are denoted by the same reference numerals, and the description thereof is omitted.

図１３は、第１変形例に係る先端部２６の先端面２６ａの平面図である。なお、図１３では、図２に図示したノズル５８に代わり送気管路１１２の一方の端部（穴部）及び送液管路１１４の一方の端部（穴部）１１４ｃが図示されている。図１３に示す第１変形例は、対物光学系１０３に具備されるズーム機構１０７と送気管路１１２及び送液管路１１４との干渉を避けるために、合流管１１０の操作部側平面１１０ｂにおける送気管路１１２の一方の端部１１２ｃと送液管路１１４の一方の端部１１４ｃの配置方向が上述した実施形態に対して変更されている。すなわち、図４に示す態様では、観察窓５０が合流管１１０の真上に配置される状態において、送気管路１１２の一方の端部１１２ｃと送液管路１１４の一方の端部１１４ｃは左右方向に沿って配置されているのに対して、図１３に示す態様では、同状態において、送気管路１１２の一方の端部１１２ｃと送液管路１１４の一方の端部１１４ｃが斜め方向に沿って配置されている。   FIG. 13 is a plan view of the distal end surface 26a of the distal end portion 26 according to the first modification. In FIG. 13, instead of the nozzle 58 illustrated in FIG. 2, one end (hole) of the air supply conduit 112 and one end (hole) 114c of the liquid supply conduit 114 are illustrated. In the first modification shown in FIG. 13, in order to avoid interference between the zoom mechanism 107 provided in the objective optical system 103, the air supply pipe 112, and the liquid supply pipe 114, the operation section side plane 110b of the merging pipe 110 is provided. The arrangement direction of one end 112c of the air supply conduit 112 and one end 114c of the liquid supply conduit 114 is changed with respect to the above-described embodiment. That is, in the embodiment shown in FIG. 4, in the state where the observation window 50 is disposed right above the merging pipe 110, one end 112c of the air supply pipe 112 and one end 114c of the liquid supply pipe 114 are left and right. In the embodiment shown in FIG. 13, in the same state, one end 112c of the air supply conduit 112 and one end 114c of the liquid supply conduit 114 are obliquely arranged in the same state. Are arranged along.

すなわち、対物光学系１０３の構造や大きさ、配置に対応して、対物光学系１０３を避けて送気管路１１２及び送液管路１１４を形成するために、送気管路１１２及び送液管路１１４の配置に対応して、合流管１１０の操作部側平面１１０ｂにおける送気管路１１２の一方の端部（穴部）１１２ｃと送液管路１１４の一方の端部（穴部）１１４ｃとの配置を適宜変更することが可能である。   That is, in order to avoid the objective optical system 103 and form the air supply conduit 112 and the liquid supply conduit 114 corresponding to the structure, size, and arrangement of the objective optical system 103, the air supply conduit 112 and the liquid supply conduit 114 are formed. Corresponding to the arrangement of 114, there is a relationship between one end (hole) 112 c of the air supply pipe 112 and one end (hole) 114 c of the liquid supply pipe 114 on the operation part side plane 110 b of the merging pipe 110. The arrangement can be changed as appropriate.

また、図１３では、送気管路１１２の他方の端部１１２ｄ及び送液管路１１４の他方の端部１１４ｄの図示が省略されているが、これらは対物光学系１０３に対応して適宜配置される。   In FIG. 13, illustration of the other end 112 d of the air supply pipe 112 and the other end 114 d of the liquid supply pipe 114 is omitted, but these are appropriately arranged corresponding to the objective optical system 103. The

図１４は、第２変形例に係る送気管路１１２及び送液管路１１４の配置を示す図である。なお、同図における合流管１１０の真上には観察窓５０（図１３参照）が配置されているものとする。図１４に示す第２変形例では、送気管路１１２及び送液管路１１４は同図における水平方向と平行に形成される。すなわち、送気管路１１２の一方の端部１１２ｃと送液管路１１４の一方の端部１１４ｃとは斜め方向に並ぶように配置され、送気管路１１２及び送液管路１１４は、図１４における水平方向と平行に形成されるとともに、合流管１１０の中心軸１２０の方向（長手方向）について斜め方向に形成されている。 FIG. 14 is a diagram showing the arrangement of the air supply conduit 112 and the liquid supply conduit 114 according to the second modification. It is assumed that an observation window 50 (see FIG. 13) is disposed directly above the junction tube 110 in the figure. In the second modification shown in FIG. 14, feed conduit 112 and liquid supply conduit 114 is formed in parallel with the horizontal direction in FIG. That is, one end portion 112c of the air supply conduit 112 and one end portion 114c of the liquid supply conduit 114 are arranged in an oblique direction, and the air supply conduit 112 and the liquid supply conduit 114 are shown in FIG. In addition to being formed in parallel with the horizontal direction, it is formed in an oblique direction with respect to the direction (longitudinal direction) of the central axis 120 of the merge tube 110.

図１５に示す第３変形例のように、図１４に図示したＢ‐Ｂ線とＣ‐Ｃ線が必ずしも平行でなくてもよい。また、図１６に示す第４変形例のように、Ｂ‐Ｂ線（又はＣ‐Ｃ線）が存在しない態様も可能である。図１６に示す態様では、送気管路１１２は合流管１１０の中心軸の方向と略平行方向に形成され、送液管路１１４は同図における斜め下方向に形成される。   As in the third modification shown in FIG. 15, the BB line and the CC line shown in FIG. 14 do not necessarily have to be parallel. Further, as in the fourth modification shown in FIG. 16, a mode in which the BB line (or CC line) does not exist is also possible. In the embodiment shown in FIG. 16, the air supply conduit 112 is formed in a direction substantially parallel to the direction of the central axis of the confluence tube 110, and the liquid supply conduit 114 is formed in an obliquely downward direction in FIG.

図１７に示す第５変形例は、送気管路１１２の一方側（先端側）の端部１１２ｃと送液管路１１４の一方側（先端側）の端部が近接配置され、一方、送気管路１１２の他方側（基端側）の端部１１２ｃと送液管路１１４の他方側（基端側）の端部１１４ｃが離隔配置されている。   In the fifth modification shown in FIG. 17, one end (tip side) end 112c of the air supply conduit 112 and one end (tip end) of the liquid supply conduit 114 are arranged close to each other, while the air supply conduit An end portion 112c on the other side (base end side) of the passage 112 and an end portion 114c on the other side (base end side) of the liquid feeding conduit 114 are spaced apart.

図１８（ａ）は、第６変形例における合流管１１０の平面図であり、図１８（ｂ）は第６変形例に係る先端部２６の概略構造を示す断面図である。図１８（ａ），（ｂ）に示すように、送気管路１１２の中心軸と送液管路１１４の中心軸が平行であり、かつ、送気管路１１２の中心軸及び送液管路１１４の中心軸は合流管の中心軸とねじれの関係にある。   FIG. 18A is a plan view of the merge pipe 110 in the sixth modification, and FIG. 18B is a cross-sectional view showing a schematic structure of the tip portion 26 according to the sixth modification. As shown in FIGS. 18A and 18B, the central axis of the air supply conduit 112 and the central axis of the liquid supply conduit 114 are parallel to each other, and the central axis of the air supply conduit 112 and the liquid supply conduit 114 are provided. The center axis of is in a torsional relationship with the center axis of the merging tube.

図１８（ｂ）に示すように、対物光学系１０３（ズーム機構１０７）が図中下側に凸となっているために、この凸形状を避けて送気管路１１２及び送液管路１１４が配置されている。なお、同図では、送気管路１１２と送液管路１１４が重ならないように上下方向に位置をずらして図示されている。もちろん、図示のように、送気管路１１２と送液管路１１４とを上下方向に位置をずらして配置してもよい。   As shown in FIG. 18B, since the objective optical system 103 (zoom mechanism 107) is convex downward in the figure, the air supply line 112 and the liquid supply line 114 avoid the convex shape. Has been placed. In the figure, the air supply pipe 112 and the liquid supply pipe 114 are illustrated with their positions shifted in the vertical direction so that they do not overlap. Of course, as shown in the figure, the air supply line 112 and the liquid supply line 114 may be arranged with their positions shifted in the vertical direction.

かかる第１〜第６変形例によれば、合流管１１０の操作部側平面１１０ｂに設けられる送気管路１１２の一方の端部となる穴部１１２ｃ、及び送液管路１１４の一方の端部となる穴部１１４ｃは、送気管路１１２及び送液管路１１４を形成するための穴あけ加工が容易となる位置に配置することができ、送気管路１１２の他方の端部となる穴部１１２ｄ及び送液管路１１４の他方の端部となる穴部１１４ｄは先端部２６の内蔵物（撮像ユニット等）のレイアウトに対応して配置される、送気チューブ１１６及び送液チューブ１１８の配置に対応させることができる。 According to the first to sixth modifications, the hole 112c serving as one end of the air supply pipe 112 provided on the operation part side plane 110b of the confluence pipe 110 and the one end of the liquid supply pipe 114 are provided. The hole 114c to be formed can be disposed at a position where the drilling process for forming the air supply conduit 112 and the liquid supply conduit 114 is facilitated, and the hole 112d serving as the other end of the air supply conduit 112 The hole 114d, which is the other end of the liquid supply conduit 114, is arranged in accordance with the layout of the built-in object (imaging unit, etc.) at the tip 26, and is arranged for the air supply tube 116 and the liquid supply tube 118. Can be matched.

〔第２実施形態〕
次に、本発明の第２実施形態に係る内視鏡の送気送液装置について説明する。なお、先に説明した第１実施形態と同一又は類似する部分には同一の符号を付し、その説明は省略する。 [Second Embodiment]
Next, an endoscope air / liquid feeding device according to a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment demonstrated previously, or is similar, and the description is abbreviate | omitted.

図１９は、第２実施形態に係る内視鏡の送気送液装置に具備される先端部２０６の構造を示す断面図（第１実施形態における図６に対応する図）である。図１９に示す先端部２０６は、図６に示す送気管路１１２及び送液管路１１４のように屈曲部がなく（送気管路１１２の水平部１１２ｂ及び送液管路１１４の水平部１１４ｂがなく）、送気パイプ１２６及び送液パイプ１２８が斜め方向に挿入されるように、送気管路２１２及び送液管路２１４が斜め方向に略直線状に形成されている。   FIG. 19 is a cross-sectional view (a diagram corresponding to FIG. 6 in the first embodiment) showing the structure of the distal end portion 206 provided in the endoscope air / liquid feeding device according to the second embodiment. The tip 206 shown in FIG. 19 does not have a bent portion like the air supply conduit 112 and the liquid supply conduit 114 shown in FIG. 6 (the horizontal portion 112b of the air supply conduit 112 and the horizontal portion 114b of the liquid supply conduit 114 are The air supply pipe 212 and the liquid supply pipe 214 are formed substantially linearly in the oblique direction so that the air supply pipe 126 and the liquid supply pipe 128 are inserted in the oblique direction.

すなわち、図１９に示す送気管路２１２は、一方の端部２１２ｃから斜め上方向に形成され、該一方の端部２１２ｃと略同一の直径を有する細管部２１２ａと、送気パイプ１２６の外径に対応する直径（内径）を有する太管部２１２ｂから構成され、細管部２１２ａと太管部２１２ｂとは同一の中心軸を有している。同様に、送液管路２１４は、一方の端部２１４ｃから斜め下方向に形成され、該一方の端部２１４ｃと略同一の直径を有する細管部２１４ａと、送液パイプ１２８の外径に対応する直径（内径）を有する太管部２１４ｂから構成され、細管部２１４ａと太管部２１４ｂとは同一の中心軸を有している。   That is, the air supply conduit 212 shown in FIG. 19 is formed obliquely upward from one end portion 212c, and has a narrow tube portion 212a having substantially the same diameter as the one end portion 212c, and the outer diameter of the air supply pipe 126. The thin tube portion 212a and the large tube portion 212b have the same central axis. Similarly, the liquid supply pipe 214 is formed obliquely downward from one end 214c, and corresponds to the narrow pipe 214a having substantially the same diameter as the one end 214c and the outer diameter of the liquid supply pipe 128. The thin tube portion 214a and the thick tube portion 214b have the same central axis.

かかる態様によれば、送気管路２１２及び送液管路２１４を屈曲させずに略直線状に形成することで製造工程が簡略化される。また、操作部側（同図中、右側）からの穴あけ加工のみで送気管路２１２及び送液管路２１４を形成することも可能である。   According to this aspect, the manufacturing process is simplified by forming the air supply pipe 212 and the liquid supply pipe 214 in a substantially straight line without bending. It is also possible to form the air supply line 212 and the liquid supply line 214 only by drilling from the operation unit side (right side in the figure).

〔第３実施形態〕
次に、本発明の第３実施形態に係る内視鏡の送気送液装置について説明する。なお、先に説明した第１、第２実施形態と同一又は類似する部分には同一の符号を付し、その説明は省略する。 [Third Embodiment]
Next, an endoscope air / fluid feeding device according to a third embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st, 2nd embodiment demonstrated previously, or similar, and the description is abbreviate | omitted.

図２０に示す第３実施形態では、送気パイプ３２６及び送液パイプ３２８の構造が、図１９に示した第２実施形態と相違している。一方、先端部２０６の構造は第２実施形態と同一である。 In the third embodiment shown in FIG. 20, the structure of the air pipe 326 and liquid transfer pipe 328 is different from the second embodiment shown in FIG. 19. On the other hand, the structure of the distal end portion 206 is the same as that of the second embodiment.

すなわち、図２０に示す送気パイプ３２６及び送液パイプ３２８は、送気管路２１２の太管部２１２ｂ及び送液管路２１４の太管部２１４ｂに対応して斜め方向の傾斜管部３２６ａ，３２８ａと、合流管１１０の中心軸１２０（図５参照）の方向と略平行の水平管部３２６ｂ，３２８ｂと、を有して構成されている。   That is, the air supply pipe 326 and the liquid supply pipe 328 shown in FIG. 20 correspond to the inclined pipe portions 326a and 328a in the oblique direction corresponding to the thick tube portion 212b of the air supply conduit 212 and the thick tube portion 214b of the liquid supply conduit 214. And horizontal pipe portions 326b and 328b substantially parallel to the direction of the central axis 120 (see FIG. 5) of the merge pipe 110.

かかる態様によれば、送気パイプ３２６及び送液パイプ３２８の取出方向（図３等に示す送気チューブ１１６及び送液チューブ１１８の接合方向）を合流管１１０の中心軸１２０の方向と略平行にすることができ、送気チューブ１１６及び送液チューブ１１８の最適配置を実現することができる。   According to this aspect, the take-out direction of the air supply pipe 326 and the liquid supply pipe 328 (the joining direction of the air supply tube 116 and the liquid supply tube 118 shown in FIG. 3 and the like) is substantially parallel to the direction of the central axis 120 of the merging pipe 110. The optimal arrangement of the air supply tube 116 and the liquid supply tube 118 can be realized.

また、送気チューブ１１６と送気パイプ３２６とを固定する際、及び送液チューブ１１８と送液パイプ３２８とを固定する際に送気パイプ３２６及び送液パイプ３２８の屈曲構造を利用することができる。   Further, when the air supply tube 116 and the air supply pipe 326 are fixed, and when the liquid supply tube 118 and the liquid supply pipe 328 are fixed, the bent structure of the air supply pipe 326 and the liquid supply pipe 328 can be used. it can.

上述した第１〜第３実施形態では、主として医療用の内視鏡を例に挙げて説明したが、本発明は工業用途の孔内観察装置にも適用可能である。   In the above-described first to third embodiments, the medical endoscope has been mainly described as an example. However, the present invention can also be applied to an in-hole observation apparatus for industrial use.

以上、本発明に内視鏡の送気送液構造を詳細に説明したが、本発明は、以上の例には限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行ってもよいのはもちろんである。   As mentioned above, although the air supply / liquid supply structure of the endoscope has been described in detail in the present invention, the present invention is not limited to the above examples, and various improvements and modifications can be made without departing from the gist of the present invention. Of course you can go.

〔付記〕
上記に詳述した発明の実施形態についての記載から把握されるとおり、本明細書は少なくとも以下に示す発明を含む多様な技術思想の開示を含んでいる。 [Appendix]
As will be understood from the description of the embodiments of the invention described in detail above, the present specification includes disclosure of various technical ideas including at least the invention described below.

（発明１）：内視鏡の挿入部の先端部に設けられ、第１の流体を送る第１の流体管と、前記第１の流体管とともに前記内視鏡の挿入部の先端部に設けられ、第２の流体を送る第２の流体管と、前記第１の流体管及び前記第２の流体管と接続される構造を有し、前記第１の流体管及び前記第２の流体管との合流部における中心軸が、前記第１の流体管の中心軸及び前記第２の流体管の中心軸の少なくともいずれか一方とねじれの関係にある合流管と、を備えたことを特徴とする送気送液装置。 (Invention 1): Provided at the distal end portion of the insertion portion of the endoscope, and provided at the distal end portion of the insertion portion of the endoscope together with the first fluid tube that sends the first fluid. A second fluid pipe for sending a second fluid, and a structure connected to the first fluid pipe and the second fluid pipe, the first fluid pipe and the second fluid pipe A central axis in a merging portion of the first fluid pipe and the central axis of the second fluid pipe, and a merging pipe having a twisted relationship with at least one of the central axis of the second fluid pipe Air / liquid feeding device.

本発明によれば、合流管の第１の流体管と第２の流体管との合流部において、合流管の中心軸と第１の流体管の中心軸及び第２の流体管の中心軸の少なくともいずれか一方をねじれの関係とすることで、合流管と接続される第１の流体管及び第２の流体管を周辺の構造に合わせて立体的に配置することができ、第１の流体管及び第２の流体管が配置される部分のスペース効率の向上が見込まれる。   According to the present invention, in the joining portion of the first fluid pipe and the second fluid pipe of the joining pipe, the central axis of the joining pipe, the central axis of the first fluid pipe, and the central axis of the second fluid pipe By setting at least one of them in a twisted relationship, the first fluid pipe and the second fluid pipe connected to the merge pipe can be three-dimensionally arranged in accordance with the surrounding structure, and the first fluid An improvement in space efficiency of the portion where the pipe and the second fluid pipe are arranged is expected.

本発明に係る合流管の具体例として、第１の流体管と前記第２の流体管との接続部における中心軸と第１の流体管の中心軸がねじれの関係にある態様、第１の流体管と前記第２の流体管との接続部における中心軸と第２の流体管の中心軸がねじれの関係にある態様、第１の流体管と前記第２の流体管との接続部における中心軸と第１の流体管の中心軸及び第２の流体管の中心軸の両方がねじれの関係にある態様が含まれる。   As a specific example of the merging pipe according to the present invention, a mode in which the central axis of the connecting portion between the first fluid pipe and the second fluid pipe and the central axis of the first fluid pipe are in a twisted relationship, A mode in which the central axis of the connecting portion between the fluid pipe and the second fluid pipe and the central axis of the second fluid pipe are in a twisted relationship, and in the connecting portion between the first fluid pipe and the second fluid pipe An aspect in which both the central axis, the central axis of the first fluid pipe, and the central axis of the second fluid pipe are in a torsional relationship is included.

本発明における「ねじれの関係」とは、交差することなく、かつ、平行でない関係を含む概念である。かかるねじれの関係の一例として、第１の流体管の中心軸と第２の流体管の中心軸が同一平面上の存在しない状態が挙げられる。   The “twisted relationship” in the present invention is a concept that includes a relationship that does not intersect and is not parallel. An example of such a twist relationship is a state in which the central axis of the first fluid pipe and the central axis of the second fluid pipe do not exist on the same plane.

本発明の一態様として、第１の流体を気体（空気又は炭酸ガス）、第２の流体を液体（水又は洗浄液）とする態様がある。さらに、第１の流体を合流管へ送るか、第２の流体を合流管へ送るかを切り換える切換手段を備える態様が好ましい。   As one aspect of the present invention, there is an aspect in which the first fluid is a gas (air or carbon dioxide gas) and the second fluid is a liquid (water or cleaning liquid). Furthermore, an aspect provided with the switching means which switches whether a 1st fluid is sent to a merging pipe, or a 2nd fluid is sent to a merging pipe is preferable.

（発明２）：発明１に記載の送気送液装置において、前記第１の流体管と前記第２の流体管とは、ねじれの位置関係となるように配置されることを特徴とする。   (Invention 2): In the air / liquid feeding device according to Invention 1, the first fluid pipe and the second fluid pipe are arranged so as to have a twisted positional relationship.

かかる態様における「ねじれ位置の関係」の一例として、第１の流体管と第２の流体管とを立体交差のように配置する位置関係が挙げられる。   As an example of the “relationship between twist positions” in such an embodiment, there is a positional relation in which the first fluid pipe and the second fluid pipe are arranged like a three-dimensional intersection.

（発明３）：発明１に記載の送気送液装置において、前記第１の流体管と前記第２の流体管とは、平行となるように配置されることを特徴とする。   (Invention 3): In the air / liquid feeding device according to Invention 1, the first fluid pipe and the second fluid pipe are arranged in parallel to each other.

（発明４）：発明１乃至３のいずれかに記載の送気送液装置において、前記第１の流体管の中心軸が位置する面と前記第２の流体管の中心軸が位置する面とは平行であることを特徴とする。   (Invention 4): In the air / liquid feeding device according to any one of Inventions 1 to 3, the surface on which the central axis of the first fluid pipe is located and the surface on which the central axis of the second fluid pipe is located Are parallel.

（発明５）：発明１乃至３のいずれかに記載の送気送液装置において、前記第１の流体管の中心軸が位置する面と、前記第２の流体管の中心軸が位置する面と、は非平行であることを特徴とする。   (Invention 5): In the air / liquid feeding device according to any one of Inventions 1 to 3, the surface on which the central axis of the first fluid pipe is located and the surface on which the central axis of the second fluid pipe is located And are non-parallel.

（発明６）：発明１乃至５のいずれかに記載の送気送液装置において、前記先端部は先端面が円形状の円筒形状を有し、前記合流管は、前記先端部の先端面に開口を有するとともに、前記先端部の中心軸の方向と平行方向に形成された円筒形状を有する凹部であることを特徴とする。 (Invention 6): In the air feeding device according to any one of Inventions 1 to 5, wherein the tip distal end surface has a cylindrical shape of circular, the merging pipe, the end surface of the distal portion and having an opening, characterized in that it is a recess having a circular cylinder shape formed in the direction the flat row direction of the central axis of the tip.

かかる態様において、先端部の先端面から中心軸の方向に沿って穴あけ加工を施すことにより合流管を形成することができる。   In such an embodiment, the joining pipe can be formed by drilling along the direction of the central axis from the tip surface of the tip portion.

（発明７）：発明６に記載の送気送液装置において、前記合流管の底面は、前記第１の流体管の一方の端部となる第１の穴部が形成されるとともに、前記第２の流体管の一方の端部となる第２の穴部が形成され、前記第１の穴部と前記第２の穴部は、前記合流管の底面の中心を通る同一の線上に配置されることを特徴とする。   (Invention 7): In the air / liquid feeding device according to Invention 6, the bottom surface of the merging pipe is formed with a first hole which is one end of the first fluid pipe, and the first 2nd hole part used as one edge part of 2 fluid pipes is formed, and the 1st hole part and the 2nd hole part are arranged on the same line which passes through the center of the bottom of the merge pipe. It is characterized by that.

かかる態様によれば、合流管の底面から穴あけ加工を施すことにより、第１の流体管及び第２の流体管を形成することができる。   According to this aspect, the first fluid pipe and the second fluid pipe can be formed by drilling from the bottom surface of the merge pipe.

（発明８）：発明６又は７に記載の送気送液装置において、前記第１の流体管及び前記第２の流体管は、それぞれ前記先端部の中心軸の方向に対して斜め方向に形成され、一方の端部が前記合流管の開口と対向する底面に接合される構造を有する傾斜部を含み、前記第１の流体管の傾斜部と、前記第２の流体管の傾斜部とは、前記先端部の中心軸の方向に対して反対向きに形成されることを特徴とする。   (Invention 8): In the air / liquid feeding device according to Invention 6 or 7, each of the first fluid pipe and the second fluid pipe is formed obliquely with respect to the direction of the central axis of the tip portion. An inclined portion having a structure in which one end is joined to a bottom surface facing the opening of the confluence tube, and the inclined portion of the first fluid pipe and the inclined portion of the second fluid pipe are The tip portion is formed in a direction opposite to the direction of the central axis of the tip portion.

かかる態様において、第１の流体管を形成するときは合流管の底面から斜め方向に穴あけ加工が施され、第２の流体管を形成するときは第１の流体管を形成するときと反対向きに穴あけ加工が施される。   In such an aspect, when forming the first fluid pipe, drilling is performed obliquely from the bottom surface of the confluence pipe, and when forming the second fluid pipe, the direction opposite to that when forming the first fluid pipe is formed. Is drilled.

（発明９）：発明８に記載の送気送液装置において、前記第１の流体管及び前記第２の流体管は、前記傾斜部の他方の端部と連通し、前記先端部の中心軸の方向と平行方向に形成された水平部を含むことを特徴とする。 (Invention 9): In the air feeding device according to inventions 8, wherein the first fluid conduit and the second fluid conduit is in communication other end and communicating of the inclined portion, the center of the tip portion characterized in that it comprises a horizontal portion formed in a direction the flat row axis.

かかる態様によれば、第１の流体管及び第２の流体管の取り出し方向を先端部の中心軸の方向と略平行方向とすることで、第１の流体管及び第２の流体管に接合されるパイプやチューブの接合が容易となる。   According to this aspect, the first fluid pipe and the second fluid pipe are joined to the first fluid pipe and the second fluid pipe by setting the take-out direction of the first fluid pipe and the second fluid pipe to be substantially parallel to the direction of the central axis of the tip portion. It becomes easy to join pipes and tubes.

（発明１０）：発明９に記載の送気送液装置において、前記第１の流体管の水平部の傾斜部と連通する端部の反対側の端部は、第１の送流パイプと接合されるとともに、前記第２の流体管の水平部の傾斜部と連通する端部の反対側の端部は、第２の送流パイプと接合されることを特徴とする。   (Invention 10): In the air / liquid feeding device according to Invention 9, an end of the first fluid pipe opposite to an end communicating with the inclined portion of the horizontal portion is joined to the first flow pipe. In addition, the end of the second fluid pipe opposite to the end communicating with the inclined portion of the horizontal portion is joined to the second flow pipe.

（発明１１）：発明４乃至８のいずれかに記載の送気送液装置において、前記第１の流体管の傾斜部の他方の端部は、第１の送流パイプと接合されるとともに、前記第２の流体管の傾斜部の他方の端部は、第２の送流パイプと接合されることを特徴とする。 (Invention 11): In the air / liquid feeding device according to any one of Inventions 4 to 8, the other end of the inclined portion of the first fluid pipe is joined to the first feed pipe, The other end of the inclined portion of the second fluid pipe is joined to a second feed pipe.

（発明１２）：発明１１に記載の送気送液装置において、前記第１の送流パイプ及び第２の送流パイプは、前記傾斜部に対応する傾斜を有する傾斜管部、及び前記先端部の中心軸の方向と平行方向に沿う水平管部を含む屈曲構造を有することを特徴とする。 (Invention 12): In the air / liquid feeding device according to Invention 11, the first flow pipe and the second flow pipe include an inclined pipe portion having an inclination corresponding to the inclined portion, and the tip portion. It characterized by having a bending structure including a horizontal tube portion along the direction the flat row direction of the central axis of.

１…内視鏡、２６，２０６…先端部、２６ａ…先端面、５０…観察窓、５８…ノズル、１１０…合流管、１１０ａ…開口、１１０ｂ…操作部側平面、１１２…送気管路、１１２ａ，１１４ａ…傾斜部、１１２ｂ，１１４ｂ…水平部、１１２ｃ，１１４ｃ…穴部（端部）、１１２ｄ，１１４ｄ…穴部（端部）、１１４…送液管路、１２６，３２６…送気パイプ、１２８，３２８…送液パイプ   DESCRIPTION OF SYMBOLS 1 ... Endoscope, 26,206 ... Tip part, 26a ... Tip surface, 50 ... Observation window, 58 ... Nozzle, 110 ... Confluence pipe, 110a ... Opening, 110b ... Operation part side plane, 112 ... Air supply line, 112a , 114a ... inclined portion, 112b, 114b ... horizontal portion, 112c, 114c ... hole (end), 112d, 114d ... hole (end), 114 ... liquid supply conduit, 126, 326 ... air supply pipe, 128, 328 ... Liquid feeding pipe

Claims (12)

内視鏡の挿入部の先端部に設けられ、第１の流体を送る第１の流体管と、
前記第１の流体管とともに前記内視鏡の挿入部の先端部に設けられ、第２の流体を送る第２の流体管と、
前記第１の流体管及び前記第２の流体管と接続される構造を有し、前記第１の流体管及び前記第２の流体管の合流部における中心軸が、前記第１の流体管の中心軸及び前記第２の流体管の中心軸の少なくともいずれか一方とねじれの関係にある合流管と、
を備えたことを特徴とする送気送液装置。 A first fluid pipe that is provided at a distal end of the insertion portion of the endoscope and sends a first fluid;
A second fluid pipe that is provided at a distal end portion of the insertion portion of the endoscope together with the first fluid pipe, and sends a second fluid;
The first fluid pipe and the second fluid pipe are connected to each other, and a central axis at a confluence portion of the first fluid pipe and the second fluid pipe is the first fluid pipe. A confluent pipe in a twisted relationship with at least one of a central axis and a central axis of the second fluid pipe;
An air / liquid feeding device comprising: 請求項１に記載の送気送液装置において、
前記第１の流体管と前記第２の流体管とは、ねじれの位置関係となるように配置されることを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 1,
The air / liquid feeding device, wherein the first fluid pipe and the second fluid pipe are arranged so as to have a twisted positional relationship. 請求項１に記載の送気送液装置において、
前記第１の流体管と前記第２の流体管とは、平行となるように配置されることを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 1,
The air / liquid feeding device is characterized in that the first fluid pipe and the second fluid pipe are arranged in parallel. 請求項１乃至３のいずれかに記載の送気送液装置において、
前記第１の流体管の中心軸が位置する面と前記第２の流体管の中心軸が位置する面とは平行であることを特徴とする送気送液装置。 In the air / liquid feeding device according to any one of claims 1 to 3,
An air / liquid feeding device, wherein a surface on which a central axis of the first fluid pipe is positioned and a surface on which a central axis of the second fluid pipe is positioned are parallel. 請求項１乃至３のいずれかにに記載の送気送液装置において、
前記第１の流体管の中心軸が位置する面と、前記第２の流体管の中心軸が位置する面と、は非平行であることを特徴とする送気送液装置。 In the air / liquid feeding device according to any one of claims 1 to 3,
The air / liquid feeding device according to claim 1, wherein the surface on which the central axis of the first fluid pipe is located and the surface on which the central axis of the second fluid pipe is located are not parallel to each other. 請求項１乃至５のいずれかに記載の送気送液装置において、
前記先端部は先端面が円形状の円筒形状を有し、
前記合流管は、前記先端部の先端面に開口を有するとともに、前記先端部の中心軸の方向と平行方向に形成された円筒形状を有する凹部であることを特徴とする送気送液装置。 In the air / liquid feeding device according to any one of claims 1 to 5,
The tip distal end surface has a cylindrical shape of circular,
Air feeding the merging pipe, which together with an opening in the distal end surface of the tip portion, characterized in that it is a recess having a circular cylinder shape formed in the direction the flat row direction of the central axis of the distal portion apparatus. 請求項６に記載の送気送液装置において、
前記合流管の底面は、前記第１の流体管の一方の端部となる第１の穴部が形成されるとともに、前記第２の流体管の一方の端部となる第２の穴部が形成され、
前記第１の穴部と前記第２の穴部は、前記合流管の底面の中心を通る同一の線上に配置されることを特徴とする送気送液装置。 The air / liquid feeding device according to claim 6,
The bottom surface of the confluence pipe is formed with a first hole portion serving as one end portion of the first fluid tube, and a second hole portion serving as one end portion of the second fluid tube. Formed,
The air / liquid feeding device, wherein the first hole portion and the second hole portion are arranged on the same line passing through the center of the bottom surface of the junction tube. 請求項６又は７に記載の送気送液装置において、
前記第１の流体管及び前記第２の流体管は、それぞれ前記先端部の中心軸の方向に対して斜め方向に形成され、一方の端部が前記合流管の開口と対向する底面に接合される構造を有する傾斜部を含み、
前記第１の流体管の傾斜部と、前記第２の流体管の傾斜部とは、前記先端部の中心軸の方向に対して反対向きに形成されることを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 6 or 7,
Each of the first fluid pipe and the second fluid pipe is formed in an oblique direction with respect to the direction of the central axis of the tip portion, and one end portion is joined to a bottom surface facing the opening of the junction tube. Including an inclined portion having a structure
The air feeding and liquid feeding device, wherein the inclined portion of the first fluid pipe and the inclined portion of the second fluid pipe are formed in opposite directions with respect to the direction of the central axis of the tip portion. . 請求項８に記載の送気送液装置において、
前記第１の流体管及び前記第２の流体管は、前記傾斜部の他方の端部と連通し、前記先端部の中心軸の方向と平行方向に形成された水平部を含むことを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 8 ,
Said first fluid conduit and the second fluid conduit is in communication other end and communicating of the inclined portion, characterized in that it comprises a horizontal portion formed in a direction the flat row direction of the central axis of the distal portion An air / liquid feeding device. 請求項９に記載の送気送液装置において、
前記第１の流体管の水平部の傾斜部と連通する端部の反対側の端部は、第１の送流パイプと接合されるとともに、
前記第２の流体管の水平部の傾斜部と連通する端部の反対側の端部は、第２の送流パイプと接合されることを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 9,
The end opposite to the end communicating with the inclined portion of the horizontal portion of the first fluid pipe is joined to the first flow pipe,
An air / liquid feeding device, wherein an end of the second fluid pipe opposite to an end communicating with the inclined portion of the horizontal portion is joined to a second flow pipe. 請求項４乃至８のいずれかに記載の送気送液装置において、
前記第１の流体管の傾斜部の他方の端部は、第１の送流パイプと接合されるとともに、
前記第２の流体管の傾斜部の他方の端部は、第２の送流パイプと接合されることを特徴とする送気送液装置。 The air / liquid feeding device according to any one of claims 4 to 8,
The other end of the inclined portion of the first fluid pipe is joined to the first feed pipe,
The other end portion of the inclined portion of the second fluid pipe is joined to the second flow pipe. 請求項１１に記載の送気送液装置において、
前記第１の送流パイプ及び第２の送流パイプは、前記傾斜部に対応する傾斜を有する傾斜管部、及び前記先端部の中心軸の方向と平行方向に沿う水平管部を含む屈曲構造を有することを特徴とする送気送液装置。 In the air / liquid feeding device according to claim 11,
Bending said first flow sending pipe and the second flow sending pipe, comprising inclined pipe section having an inclination corresponding to the inclined portion, and a horizontal pipe section along the direction the flat row direction of the central axis of the distal portion An air / liquid feeding device characterized by having a structure.
JP2010147505A 2010-06-29 2010-06-29 Air / liquid feeding device Active JP5400714B2 (en)

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JP2010147505A JP5400714B2 (en) 2010-06-29 2010-06-29 Air / liquid feeding device
US13/169,809 US20110319716A1 (en) 2010-06-29 2011-06-27 Gas supply and liquid supply apparatus
EP13169744.3A EP2633801B1 (en) 2010-06-29 2011-06-28 Gas supply and liquid supply apparatus
EP11171662.7A EP2401955B1 (en) 2010-06-29 2011-06-28 Distal end part for supplying gas and liquid in an endoscope
CN201110178727.5A CN102309308B (en) 2010-06-29 2011-06-29 Supply liquid supply equipment
CN201611106749.XA CN106913307B (en) 2010-06-29 2011-06-29 Supply liquid supply equipment
US14/838,173 US20150359421A1 (en) 2010-06-29 2015-08-27 Gas supply and liquid supply apparatus

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